肉仔鸡生长性能与饲粮营养水平关系模型的建立及应用

石天虹; 张桂芝; 刘雪兰; 井庆川; 魏祥法; 刘宗平

doi:10.3969/j.issn.1006-267x.2012.07.013

动物营养学报 >

2012 , Vol. 24 >Issue 7: 1283 - 1292

DOI: https://doi.org/10.3969/j.issn.1006-267x.2012.07.013

实验方法

肉仔鸡生长性能与饲粮营养水平关系模型的建立及应用

石天虹 ,
张桂芝 ,
刘雪兰 ,
井庆川 ,
魏祥法 ,
刘宗平

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1. 扬州大学兽医学院, 扬州 225009;
2. 山东省农业科学院家禽研究所, 济南 250023

收稿日期: 2012-02-16

网络出版日期: 2012-07-05

基金资助

山东省科技发展计划项目(2007GG10009004)

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Establishment and Application of Relational Models of Growth Performance and Dietary Nutrient Levels of Broilers

SHI Tianhong ,
ZHANG Guizhi ,
LIU Xuelan ,
JING Qingchuan ,
WEI Xiangfa ,
LIU Zongping

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1. College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China;
2. Poultry Institute, Shandong Academy of Agricultural Sciences, Jinan 250023, China

Received date: 2012-02-16

Online published: 2012-07-05

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摘要

本试验旨在通过研究饲粮代谢能(metabolizable energy,ME)和粗蛋白质(crude protein,CP)水平对肉仔鸡生长性能和屠宰指标的影响,建立生长性能与ME、CP的回归关系模型,并运用所建模型选择具有最佳效益的ME、CP水平。采用ME和CP 3×3随机交叉试验设计,将饲粮分为9个处理,3个ME水平分别为13.18、12.55、11.92 MJ/kg,3个CP水平分别为21.50%、20.50%、19.50%。选取1日龄爱拔益加(AA)肉仔鸡1 080只,随机分为9组,每组3个重复,每个重复40只鸡,1~21日龄分别饲喂对应试验饲粮,22~42日龄饲喂相同的饲粮。结果表明:1)试验饲粮ME、CP水平对1~21日龄体重和耗料量有显著影响(P<0.05),对42日龄体重也有显著影响(P<0.05)。2)随着饲粮ME水平的提高,21和42日龄肌胃指数显著降低(P<0.05),42日龄腹脂率显著增加(P<0.05)。3)应用二元曲线逐步回归方法建立了体重、耗料量与饲粮ME、CP水平的回归关系模型。应用举例表明,建立的回归关系模型对确定肉仔鸡饲粮最佳效益的ME、CP水平有很强的实用性。

关键词： 肉仔鸡; 代谢能; 粗蛋白质; 生长性能; 屠宰指标; 回归关系模型

本文引用格式

石天虹 , 张桂芝 , 刘雪兰 , 井庆川 , 魏祥法 , 刘宗平 . 肉仔鸡生长性能与饲粮营养水平关系模型的建立及应用[J]. 动物营养学报, 2012 , 24(7) : 1283 -1292 . DOI: 10.3969/j.issn.1006-267x.2012.07.013

Abstract

This experiment was conducted to establish the relational models of growth performance and dietary nutrition levels by studying the effects of dietary metabolizable energy (ME) and crude protein (CP) on growth performance and slaughter indices of broilers. The optimal ME and CP levels could be obtained from the established models according to market quotation. A 3×3 (ME×CP) completely random experiment was designed to allocate 1 080 one-day-old broilers into 9 treatments with 3 replicates per treatment and 40 birds per replicate. The three dietary ME levels were 13.18、12.55、11.92 MJ/kg and the three CP levels were 21.50%、20.50%、19.50% in diets for broilers aged 1 to 21 days, respectively. Broilers aged 22 to 42 days were fed the same diets. The results showed as follows: 1) dietary ME and CP levels had significant effects on body weight (BW) and feed consumption (FC) of broilers aged 1 to 21 days (P<0.05), and it also had significant effects on BW of broilers at 42 days of age (P<0.05); 2) gizzard index of broilers at 21 and 42 days of age was decreased and percentage of abdominal fat of broilers at 42 days of age was increased with increasing dietary ME levels (P<0.05); 3) the regression relational models of growth performance and dietary ME and CP levels were established using binary curvilinear stepwise regression method. In conclusion, the illustration in practice indicates that the established models are very useful to ascertain the optimal dietary ME and CP levels.

Key words： broilers; metabolizable energy; crude protein; growth performance; slaughter index; regression relational model

参考文献

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